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The Influence of Affect on Cognition01:29

The Influence of Affect on Cognition

Positive affect significantly influences cognitive processes, including evaluation, memory, creativity, and social judgments. Compared to negative affect, positive emotional states promote more favorable interpretations of stimuli, cognitive flexibility, and heuristic processing. These effects highlight emotions' powerful role in shaping how individuals perceive, remember, and interact with the world.Influence on Evaluation and AttributionWhen individuals experience positive affect, they are...
Optimal Arousal Theory01:23

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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication

Published on: February 6, 2019

Caffeine-induced physiological arousal accentuates global processing biases.

Caroline R Mahoney1, Tad T Brunyé, Grace Giles

  • 1Tufts University, Department of Psychology, USA. Caroline.mahoney@us.army.mil

Pharmacology, Biochemistry, and Behavior
|April 6, 2011
PubMed
Summary
This summary is machine-generated.

Caffeine consumption shifts attention towards global processing in non-habitual users, influencing how individuals perceive their environment. This effect on visual attention occurs even at low doses of caffeine.

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Last Updated: Jun 3, 2026

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

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Published on: February 6, 2019

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory
08:08

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

Published on: June 18, 2014

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Physiology

Background:

  • Caffeine is a widely consumed stimulant known to affect arousal and cognitive function.
  • Previous research on caffeine's effects on attention has yielded mixed results.
  • Understanding caffeine's impact on attentional focus is crucial for various real-world applications.

Purpose of the Study:

  • To investigate the dose-dependent effects of caffeine on global versus local object focus in non-habitual consumers.
  • To examine the relationship between caffeine-induced physiological arousal and attentional processing biases.
  • To determine the minimum effective caffeine dose for altering visual attention.

Main Methods:

  • A double-blind, within-subjects, repeated-measures design was employed with 36 low caffeine consumers.
  • Participants completed 5 counterbalanced sessions involving normal consumption or placebo, 100mg, 200mg, or 400mg caffeine.
  • Visual attention tasks, mood, salivary caffeine, and cortisol levels were measured.

Main Results:

  • Caffeine administration effectively increased salivary caffeine and cortisol levels, confirming physiological arousal.
  • A dose-dependent increase in arousal was observed.
  • Even a low dose of 100mg caffeine induced a global processing bias in visual attention.

Conclusions:

  • Caffeine consumption, even at low doses, promotes a global processing bias in non-habitual users.
  • Caffeine-induced arousal influences how individuals attend to and process environmental information.
  • These findings have implications for tasks involving face recognition, spatial learning, and navigation.